I agree with everyone regarding the bend and that you are doing a good job. Don't ever tell yourself that you can't ride your own horse or that someone else can ride it better. The reality is, someone out there in the world can always ride all of our horses better, but the point is that we ride them, improve ourselves, and enjoy the journey.
In terms of the canter, I would utilize the lunge line. Your horse should be able to canter several balanced circles without running or rushing on the lunge line before you can really expect that under saddle. Also, while I know not everyone is into voice commands, the more she can canter from voice command, the easier your job will be at first.
Good luck & you guys are adorable.

PS. I couldn't not love your flat leather bridle more!